Ashcroft 1009 Analog Pressure Gauges

Ashcroft 1009 analog pressure gauges feature stainless steel cases and are available in 2.5, 3.5, 4.5 and 6 inch sizes. Ashcroft 1009 analog pressure gauges are ideal whenever space limitations and atmospheric and process corrosion exists.

Incorporating the tried and true performance and quality for which Ashcroft gauges are known, Ashcroft 1009 analog pressure gauges are available in ranges from vacuum to 30,000 psi, including compound and metric ranges. Standard accuracy is ±1% full scale. Available connections include 1/8, 1/4 and 1/2 inch NPT fittings that can be located on the lower portion or back of the pressure gauge.

Ashcroft 1009 analog pressure gauges, in 63 and 100mm dial sizes, are also available with a PLUS!™ Performance option. PLUS! Performance is a new, exclusive technology which provides liquid-filled performance in a dry gauge. PLUS! Performance advantages over standard dry gauges include dampened vibration and pulsation resulting in a steadier pointer and an easier to read gauge. PLUS! Performance advantages over liquid filled gauges include lower cost, no leakage, no fill lines, wider temperature range, and easier recalibration.

Frequently Asked Questions

What is the Ashcroft 1009 analog pressure gauge?

The Ashcroft 1009 is a mechanical pressure gauge that provides local pressure indication without requiring electrical power. It uses a Bourdon tube sensing element and an analog pointer to display pressure on a calibrated dial. The stainless steel case and broad selection of sizes, pressure ranges, materials, connections, and fill options make it suitable for general industrial and process applications.

What applications use the Ashcroft 1009 pressure gauge?

The Ashcroft 1009 can be used on pumps, compressors, hydraulic equipment, pneumatic systems, process skids, water systems, manufacturing machinery, and other equipment requiring direct local pressure indication. It is particularly useful where limited installation space, atmospheric corrosion, or process corrosion makes a durable stainless steel case desirable.

What dial sizes are available?

The Ashcroft 1009 is available with 2.5, 3.5, 4.5, and 6-inch dials. Smaller dials are useful for compact machinery and crowded panels, while larger dials provide improved readability from greater distances.

What pressure ranges are available?

The 1009 is available in vacuum, compound, and positive-pressure ranges extending up to 30,000 psi. Metric pressure scales are also available. Users should select a range that places normal operating pressure near the middle portion of the dial while leaving sufficient capacity for expected fluctuations and pressure surges.

How accurate is the Ashcroft 1009?

The Ashcroft 1009 has a standard accuracy of ±1% of full scale and meets ASME B40.100 Grade 1A requirements. For example, a 0-to-100 psi gauge with ±1% full-scale accuracy has a permissible error of approximately ±1 psi across its specified range.

What process-connection sizes are available?

Available process connections include 1/8, 1/4, and 1/2-inch NPT fittings, depending on the selected dial size and configuration. Connections can be positioned on the lower portion or back of the gauge to accommodate direct pipe mounting, panel mounting, or equipment installation.

What wetted materials are available?

The 1009 can be configured with different Bourdon tube and socket materials, including options for brass or bronze service and 316 stainless steel construction. The correct wetted material should be selected based on the chemical composition, concentration, temperature, and pressure of the process fluid. Media compatibility should always be confirmed before installation.

When should I choose stainless steel wetted parts?

A 316 stainless steel tube and socket should be considered when the process media may corrode copper-alloy components or when the application requires greater resistance to aggressive industrial fluids. Stainless steel is commonly selected for chemical processing, water treatment, corrosive gases, and other demanding services, but compatibility must still be verified for the specific medium.

What is the difference between a dry and liquid-filled pressure gauge?

A dry gauge contains no case-filling liquid and is generally suitable for stable applications with limited vibration or pulsation. A liquid-filled gauge surrounds the movement with a damping fluid that helps stabilize the pointer, lubricate internal components, and reduce wear caused by vibration and rapidly changing pressure. The Ashcroft 1009 is available in both dry and liquid-filled configurations.

Is the Ashcroft 1009 suitable for vibration and pulsation?

Yes. For equipment exposed to vibration or pulsating pressure, the 1009 can be ordered as a liquid-filled gauge or with Ashcroft’s optional PLUS! Performance feature on applicable dial sizes. These configurations help steady the pointer, improve readability, and reduce wear on the internal movement.

What is Ashcroft PLUS! Performance?

PLUS! Performance is a damping technology that provides performance similar to a liquid-filled gauge while allowing the case to remain dry. It helps reduce pointer movement caused by vibration and pulsation, making the dial easier to read. Compared with conventional liquid filling, it eliminates fill-fluid leakage and fill lines, supports a wider operating-temperature range, and makes recalibration easier.

Which Ashcroft 1009 sizes are available with PLUS! Performance?

Instrumart lists PLUS! Performance availability for the 63 mm and 100 mm versions, corresponding approximately to the 2.5 and 4-inch classes referenced in the product description. Availability depends on the exact dial size, range, materials, and configuration, so the complete part number should be checked when ordering.

Can the Ashcroft 1009 be recalibrated?

Yes. The 1009 uses a removable bayonet ring that provides access for inspection and minor adjustment. It also includes a micrometer-adjustable pointer as a standard feature, allowing qualified personnel to make controlled pointer corrections when necessary.

What pointer options are available?

The standard 1009 uses a micrometer-adjustable pointer. Depending on the dial size and configuration, optional pointer styles can include friction-adjustable pointers, Duralife aluminum pointers, external set hands, and maximum-indicating pointers. These options can help operators mark limits or track the highest pressure reached during operation.

Can the Ashcroft 1009 be used outdoors?

The stainless steel case provides resistance to atmospheric corrosion, making the 1009 suitable for many industrial and sheltered outdoor installations. For locations exposed to rain, washdown, condensation, or severe weather, users should select the appropriate case fill, window, enclosure configuration, and mounting method and verify the environmental rating of the complete model number.

Can the Ashcroft 1009 measure corrosive fluids?

Yes, when it is configured with wetted materials that are compatible with the process medium. For fluids that are especially corrosive, viscous, abrasive, prone to crystallization, or likely to clog the pressure passage, the gauge can be paired with a diaphragm seal to isolate its sensing element from the process. Instrumart lists multiple compatible Ashcroft diaphragm seals for the 1009.

When should a diaphragm seal be used with the 1009?

A diaphragm seal should be considered when the process fluid could corrode, clog, freeze within, or otherwise damage the gauge’s Bourdon tube and socket. It can also be useful for sanitary processes, high-temperature media, slurries, or fluids that must not enter the gauge. The seal’s materials, fill fluid, pressure range, and temperature limits must match the application.

Can the Ashcroft 1009 measure steam pressure?

The 1009 can measure steam pressure when installed with suitable protection from excessive process temperature. A siphon or another cooling element is normally installed between the steam line and gauge so condensed water creates a thermal barrier. Instrumart offers compatible Ashcroft pigtail, coil, finned, and MicroTube siphons for pressure-instrument protection.

How should I select the correct pressure range?

Choose a range that keeps normal operating pressure within the gauge’s most readable area and allows room for expected surges. For steady pressure, normal operation is commonly targeted near the middle of the scale. Applications involving pulsation or frequent pressure spikes may require a higher range, a snubber, a pulsation dampener, or a filled or PLUS! Performance configuration.

When should I choose the Ashcroft 1009 instead of the 1279 Duragauge?

The 1009 is a strong choice for general industrial applications requiring ±1% full-scale accuracy, stainless steel case construction, multiple dial sizes, and broad configuration flexibility. The 1279 Duragauge is generally better suited to more critical process applications requiring higher ±0.5% full-scale accuracy, a solid-front safety case, and more demanding process-industry construction. Ashcroft describes the 1009 as a durable, adjustable industrial gauge, while the 1279 is positioned as a heavier-duty process gauge.